Development of crystalline phases in sintered glass-ceramics from residual E-glass fibres
The crystalline phase evolution during firing of glass-ceramic materials from residual E-glass fibres was investigated as a function of temperature and time. The thermal stability and crystallisation mechanism were studied by differential scanning calorimetry (DSC). The mineralogical and microstruct...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/88551 |
| Acceso en línea: | http://hdl.handle.net/10261/88551 |
| Access Level: | acceso abierto |
| Palabra clave: | Waste valorization Vitrification Sintering Glass-ceramics Microstructure |
| Sumario: | The crystalline phase evolution during firing of glass-ceramic materials from residual E-glass fibres was investigated as a function of temperature and time. The thermal stability and crystallisation mechanism were studied by differential scanning calorimetry (DSC). The mineralogical and microstructural characterisation of the sintered glass-ceramics was carried out by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM), respectively. The crystallisation behaviour was depicted by the TTT (Time-Temperature-Transformation) curve. The activation energies for crystallisation were calculated by the Friedman differential isoconversional method. The results show that devitrification of the glass leads to a series of glass-ceramic materials composed of wollastonite and plagioclase s.s. Their microstructure is composed of a dense network of crystals, which is responsible for the high mechanical properties exhibited by these materials. |
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